A tachometer in which sine and cosine signals responsive to the angular position of a shaft as it rotates are each multiplied by like, sine or cosine, functions of a carrier signal, the products summed, and the resulting frequency signal converted to fixed height, fixed width pulses of a like frequency. These pulses are then integrated, and the resulting dc output is an indication of shaft speed.
NASA Marshall Space Flight Center Report
- Pub Date:
- August 1977
- Rotating Shafts;
- Velocity Measurement;
- Direct Current;
- Instrumentation and Photography